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      <a href="/typhoon/2017/09/17/PropertyChangeListener概念和用法/" title="PropertyChangeListener概念和用法" itemprop="url">PropertyChangeListener概念和用法</a>
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    <time datetime="2017-09-17T13:50:19.000Z" itemprop="datePublished"> Published 2017-09-17</time>
    
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        <pre><code>java中类的实例化对象的属性值是经常发生变化的,有时候我们需要监听到对象中属性值的变化,
从而触发额外的操作,举个栗子:我们日常开发的项目上线后一般都会有监控,拿cpu监控来说,
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      <a href="/typhoon/2017/09/17/基于业务的列表比较器/" title="基于业务的列表比较器" itemprop="url">基于业务的列表比较器</a>
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    <time datetime="2017-09-17T13:27:21.000Z" itemprop="datePublished"> Published 2017-09-17</time>
    
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        <pre><code>在很多情况下前端页面或者其他客户端和后台交互提交数据都是单条数据的更新和插入,但是在有些场景下,
基于特定的业务客户端需要一列表的方式提交数据,我们传统的解决方案是讲苦中的数据删除,然后将客户端
传来的数据列表批量插入,但是这样就有很多弊.
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      <a href="/typhoon/2017/08/29/spring-redis缓存注解/" title="spring+redis缓存注解" itemprop="url">spring+redis缓存注解</a>
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    <time datetime="2017-08-29T13:56:24.000Z" itemprop="datePublished"> Published 2017-08-29</time>
    
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        <pre><code>使用缓存的方式很多,有基于工具类手动操作的,也有基于注解的,各有千秋,接下来将借助spring+redis实现基于注解的缓存使用.
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      <a href="/typhoon/2017/08/28/spring上下文工具类/" title="spring上下文工具类" itemprop="url">spring上下文工具类</a>
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    <time datetime="2017-08-28T09:15:23.000Z" itemprop="datePublished"> Published 2017-08-28</time>
    
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        <pre><code>众所周知,spring是目前来说最好的java框架,使用spring开发程序省去了我们很多繁杂的工作,比如说自己管理bean声明周期,依赖注入等。
我们平时除了依赖框架开发之外,spring同时提供了一些接口供开发者使用,这样的话我们的自己的程序就可以交给spring容器管理,
或者说使用spring的很多功能,常见的ApplicationContext和InitialingBean等,接下来将简单介绍ApplicationContext的应用场景和使用姿势:
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      <a href="/typhoon/2017/08/28/使用本地缓存/" title="使用本地缓存" itemprop="url">使用本地缓存</a>
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        <pre><code>缓存是高并发程序开发中的一大利器,利用缓存我们能够显著有效的提高程序的响应能力,缓存服务器和数据库的压力,市面上常用的缓存有单机缓存memcached，集群缓存redis等等,
对于大型互联网项目的高并发场景我们使用第三方缓存插件是首选,但是对于一些并发不是很大,但是频繁访问数据库也会影响性能和带来压力的一些场景,我们可以是用本地缓存来
提高程序响应速度和缓解服务器和数据可压力,常用的本地缓存有guava的本地cache,以及各个公司自己封装的本地缓存插件(本质上本地缓存是使用Map实现的,差别在于实现方式和性能)
,此篇就使用guava实现本地缓存展开叙述:
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      <a href="/typhoon/2017/08/28/缓存穿透解决方案/" title="缓存穿透解决方案" itemprop="url">缓存穿透解决方案</a>
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    <time datetime="2017-08-28T02:41:16.000Z" itemprop="datePublished"> Published 2017-08-28</time>
    
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        <pre><code>在并发很大的情况下,使用缓存能很大程度上缓解服务器和数据库层的压力,然而随着技术的发展,缓存也暴露除了很多问题,
比如说:缓存穿透、缓存雪崩、缓存并发、缓存失效、数据一致性问题,今天就缓存穿透问题做一下分析和给出具体的解决方案
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      <a href="/typhoon/2017/08/22/免配置使用spring中JdbcTemplate/" title="免配置使用spring中JdbcTemplate" itemprop="url">免配置使用spring中JdbcTemplate</a>
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    <time datetime="2017-08-22T15:15:06.000Z" itemprop="datePublished"> Published 2017-08-22</time>
    
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        <pre><code>使用Spring-jdbc包自带的jdbcTemplate我们可以直接进行数据库操作(不使用持久层框架),使我们的应用程序更加灵活,但是使用Spring框架的时候难免要使用配置文件,
但是有些场景我们可能不需要那么重的配置。举例:我们的通用模块中可能要做到管控dubbo服务访问权限,而权限列表就放在mysql表中,那么我们可能在通用模块中需要
操作数据库查询,但是用到查询的地方特别少,这时候我们加上spring配置,是有点浪费的。那么我们可不可以不使用配置去获得数据库连接或者jdbcTemplate去查询数据?
当然是可以的,不过我们自己实现的话,首先比较困难,另外是没必要。我们此处使用最简化的方式实现这个功能:
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      <a href="/typhoon/2017/08/20/RequestBody报400分析与解决方案/" title="RequestBody报400分析与解决方案" itemprop="url">RequestBody报400分析与解决方案</a>
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    <time datetime="2017-08-20T12:55:52.000Z" itemprop="datePublished"> Published 2017-08-20</time>
    
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        <pre><code>spring目前来说是java最好的框架,springmvc是其中一个子集,java web开发过程中使用springmvc来实现前端页面或者其他客户端与后台服务层打交道,
目前来说http请求最常用的就是get和post请求,参数格式也不尽相同,有最原始的请求参数带在url中,包括后边发展而来的表单提交,以及目前比较流行的
前后端分离使用的json格式参数做数据交互。今天就工作中遇到的json格式的数据交互问题作出分析和解决方案.
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      <a href="/typhoon/2017/08/20/java内存排序与mysqlDB排序性能对比/" title="java内存排序与mysqlDB排序性能对比" itemprop="url">java内存排序与mysqlDB排序性能对比</a>
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    <time datetime="2017-08-20T06:11:45.000Z" itemprop="datePublished"> Published 2017-08-20</time>
    
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        <pre><code>众所周知,排序是开发过程中必不可少的一个环节,作为一个后台开发工程师,我们可能每天都会与排序打交道。最常用的是
在写sql查询的时候使用DB的自带排序方式,接下来我们将分析一下各种情境下排序方式的性能损耗对比(以下所有数据库交互皆基于mysql):
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      <a href="/typhoon/2017/08/09/java性能优化实例分析/" title="java性能优化实例分析" itemprop="url">java性能优化实例分析</a>
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    <time datetime="2017-08-09T14:00:16.000Z" itemprop="datePublished"> Published 2017-08-09</time>
    
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        <pre><code>之前写过一些java性能优化的总结,但是没有依照具体的实例分析,看起来比较空洞,
此篇我将依照在珍爱网的阅读和改造别人写的代码的过程中遇到的一些比较典型的可调优的例子,
接下来将一一做分析对比和优化:
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